Performs the per-element comparison of two arrays or an array and scalar value

dst = cv.compare(src1, src2, cmpop)

Input

• src1 first input array or a scalar; when it is an array, it must have a single channel.
• src2 second input array or a scalar; when it is an array, it must have a single channel.
• cmpop comparison type, specifies correspondence between the arrays. One of:
  • eq src1 is equal to src2.
  • gt src1 is greater than src2.
  • ge src1 is greater than or equal to src2.
  • lt src1 is less than src2.
  • le src1 is less than or equal to src2.
  • ne src1 is unequal to src2.

Output

• dst output array of type uint8 that has the same size and the same number of channels as the input arrays.

The function compares:

• Elements of two arrays when src1 and src2 have the same size:

  dst(I) = src1(I) cmpop src2(I)
  

• Elements of src1 with a scalar src2 when src2 is constructed from Scalar or has a single element:

  dst(I) = src1(I) cmpop src2
  

• src1 with elements of src2 when src1 is constructed from Scalar or has a single element:

  dst(I) = src1 cmpop src2(I)
  

When the comparison result is true, the corresponding element of output array is set to 255. The comparison operations can be replaced with the equivalent matrix expressions:

dst1 = src1 >= src2;
dst2 = src1 < 8;
...